CVE-2026-6607: Resource Consumption in lm-sys fastchat
A security vulnerability has been detected in lm-sys fastchat up to 0.2.36. This issue affects the function api_generate of the component Worker API Endpoint. The manipulation leads to resource consumption. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. The identifier of the patch is c9e84b89c91d45191dc24466888de526fa04cf33. It is suggested to install a patch to address this issue. Commit ff66426 patched this issue in api_generate of base_model_worker.py and did miss other entry points.
AI Analysis
Technical Summary
This vulnerability in lm-sys fastchat up to version 0.2.36 involves the api_generate function of the Worker API Endpoint, where remote manipulation can lead to excessive resource consumption. The issue was patched in commit c9e84b89c91d45191dc24466888de526fa04cf33 targeting base_model_worker.py, but the patch may not cover all entry points. The CVSS 4.0 score is 6.9 (medium severity), indicating a network attack vector with no privileges or user interaction required, and limited impact on availability due to resource consumption.
Potential Impact
The vulnerability allows a remote attacker to cause resource consumption on the affected system, potentially degrading service availability. There is no indication of privilege escalation, code execution, or data compromise. No known exploits are currently active in the wild.
Mitigation Recommendations
A patch addressing this vulnerability is available (commit c9e84b89c91d45191dc24466888de526fa04cf33). It is recommended to update lm-sys fastchat to a version including this fix. Note that the patch fixed the api_generate function in base_model_worker.py but may have missed other entry points, so further review and updates may be necessary. Monitor vendor advisories for additional patches or guidance.
CVE-2026-6607: Resource Consumption in lm-sys fastchat
Description
A security vulnerability has been detected in lm-sys fastchat up to 0.2.36. This issue affects the function api_generate of the component Worker API Endpoint. The manipulation leads to resource consumption. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. The identifier of the patch is c9e84b89c91d45191dc24466888de526fa04cf33. It is suggested to install a patch to address this issue. Commit ff66426 patched this issue in api_generate of base_model_worker.py and did miss other entry points.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in lm-sys fastchat up to version 0.2.36 involves the api_generate function of the Worker API Endpoint, where remote manipulation can lead to excessive resource consumption. The issue was patched in commit c9e84b89c91d45191dc24466888de526fa04cf33 targeting base_model_worker.py, but the patch may not cover all entry points. The CVSS 4.0 score is 6.9 (medium severity), indicating a network attack vector with no privileges or user interaction required, and limited impact on availability due to resource consumption.
Potential Impact
The vulnerability allows a remote attacker to cause resource consumption on the affected system, potentially degrading service availability. There is no indication of privilege escalation, code execution, or data compromise. No known exploits are currently active in the wild.
Mitigation Recommendations
A patch addressing this vulnerability is available (commit c9e84b89c91d45191dc24466888de526fa04cf33). It is recommended to update lm-sys fastchat to a version including this fix. Note that the patch fixed the api_generate function in base_model_worker.py but may have missed other entry points, so further review and updates may be necessary. Monitor vendor advisories for additional patches or guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-04-19T15:59:39.594Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e5b69619fe3cd2cd8e69b6
Added to database: 4/20/2026, 5:16:06 AM
Last enriched: 4/20/2026, 5:31:02 AM
Last updated: 4/20/2026, 6:21:02 AM
Views: 4
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